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    v1.0.28
    OpenPayerNPI Medicare & MedicaidWilliam Chen
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    William Chen — Billing Profile & Reimbursement Data

    NPI 1982744942 · Roseville, CA · Gastroenterology Physician

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    William Chen is a gastroenterology physician provider located in Roseville, California. This profile covers 19 Medicare and 0 Medicaid CPT/HCPCS procedure codes, with claims volume, average reimbursement, and total revenue by code, benchmarked against other providers billing the same services.

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    Provider details (source: NPPES NPI Registry)

    FieldValue
    Entity TypeIndividual
    OrganizationWilliam Chen
    Address5 Medical Plaza Dr Ste 140
    CityRoseville
    StateCA
    ZIP95661
    TaxonomyGastroenterology Physician
    NPI EnumeratedFebruary 7, 2007

    Lifetime revenue by payer source (source: CMS Medicare & Medicaid claims data)

    Payer SourceTotal Paid
    Medicare$90K
    Medicaid$0

    Medicare: Total Revenue Breakdown by CPT/HCPCS Code

    Medicare revenue breakdown by CPT/HCPCS procedure code.

    View: Bar Chart1 / 2

    Medicare: Complete Services Breakdown

    The CPT/HCPCS codes generating the most Medicare revenue for this provider.

    19 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    99222The provider sees a patient for an initial hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or…180$110$18.7K
    99232The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or…160$70$10.7K
    43264The provider performs a diagnostic procedure that combines upper endoscopy and retrograde (reverse) injection of contrast material, a type of dye, into the biliary ducts to obtain fluoroscopic images…50$140$7.7K
    43235The provider inserts an endoscope through the mouth and down into the esophagus, stomach, and duodenum for diagnostic purposes; the provider may collect specimens by brushing or washing.60$90$5.4K
    99233The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the…50$100$5.3K
    43274The physician performs an ERCP (a diagnostic procedure that combines upper endoscopy and retrograde (reverse or backward) injection of contrast material, a type of dye, into the biliary ducts to…10$370$5.2K
    45385The provider examines the colon and rectum using a colonoscope, a long, thin flexible tubular instrument with a light source and camera. He removes one or more tumors, polyps, or other lesions with a…30$160$5K
    43270An esophagogastroduodenoscopy (EGD) is a procedure to view the esophagus, stomach, and duodenum by means of flexible endoscope passed through the mouth. During the EGD, the provider passes guidewires…30$160$4.9K
    43277Endoscopic retrograde cholangiopancreatography (ERCP) is endoscopic inspection of the duodenum, the papilla of vater, followed by radiologic assessment of the pancreatic duct and the biliary…20$200$4.8K
    43239The provider inserts a flexible endoscope through the mouth and down into the esophagus, stomach, and duodenum where he removes one or more tissue biopsy specimens for diagnostic analysis.90$50$4.7K

    Showing 1–10 of 19

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 19 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    19 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    453851,0461,41060$340$33.9K
    992338,30111,530120$100$26.2K
    453801,0101,46060$230$23.8K
    432396491,50080$150$17.3K
    992324,05212,28090$70$16.3K
    45388384020$360$13.2K
    9922310,35413,19050$140$11.3K
    43274608020$330$9.9K
    4537840480020$220$7.5K
    432486412030$200$7.2K

    Showing 1–10 of 19

    Related Providers

    Other providers that share a Tax Identification Number (TIN) with William Chen, ranked by combined Medicare and Medicaid revenue.

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Sutter Valley HospitalsCAGeneral Acute Care Hospital$0$81.2M
    Inder SinghCAInterventional Cardiology Physician$4.7M$0
    Rhonda WyattCADiagnostic Radiology Physician$1.7M$0
    Ewa BauerCADiagnostic Radiology Physician$1.1M$0
    Douglas HughesCAVascular & Interventional Radiology Physician$1M$0
    Adam AttounCADiagnostic Radiology Physician$1M$0
    Bayani EvangelistaCADiagnostic Radiology Physician$1M$0
    Kenneth AverillCADiagnostic Radiology Physician$744.6K$0
    Mark BowersCAClinical Cardiac Electrophysiology Physician$641.1K$0
    Joseph AbramsCADiagnostic Radiology Physician$509.9K$109.1K

    Nearby Providers

    Other providers in the same ZIP code as William Chen, ranked by combined Medicare and Medicaid revenue.

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Kaiser Foundation HospitalsCAGeneral Acute Care Hospital$0$90.6M
    Artur HenkeCADermatology Physician$5.5M$0
    California Sleep Solutions, LLCCASleep Disorder Diagnostic Clinic/Center$415.3K$2.2M
    South Placer Surgery Center L PCAAmbulatory Surgical Clinic/Center$2.5M$6.3K
    Escnc LLCCAAmbulatory Surgical Clinic/Center$2M$4.1K
    Gregory BriccaCAMOHS-Micrographic Surgery Physician$1.6M$0
    Roseville Endoscopy Center, LLCCAEndoscopy Clinic/Center$1.6M$0
    Roseville Surgery Center, LPCAAmbulatory Surgical Clinic/Center$1.1M$118.2K
    Penny VandestreekCANuclear Medicine Physician$919.1K$0
    Lolita PalmerCASurgery Physician$892.2K$0

    Frequently Asked Questions

    References

    1. 1.Medicare Physician & Other Practitioner by Provider and Service. CMS.gov.Provider-level Medicare Part B utilization and payment data.
    2. 2.NPPES NPI Registry. CMS.gov.National Provider Identifier registry used for provider enumeration and taxonomy metadata.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

    Medicare Revenue by CPT/HCPCS Code
    Claims Volume vs. California Distribution
    William Chen — 2 of 19 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — California